Home / 177,729.15-245,103.66-138,972

Finding the Fourth Proportional to 177,729.15, 245,103.66 and 138,972

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Solution

The fourth proportional to 177,729.15, 245,103.66 and 138,972 is: 191,654.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,729.15 : 245,103.66 = 138,972 : x
  2. Step 2: Convert to fraction form
    177,729.15/245,103.66 = 138,972/x
  3. Step 3: Cross multiply
    177,729.15x = 245,103.66 × 138,972
  4. Step 4: Simplify right side
    177,729.15x = 34,062,545,837.52
  5. Step 5: Solve for x
    x = 34,062,545,837.52/177,729.15
  6. Step 6: Final answer
    x = 191,654.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.